- Terry Taylor
- Tesary Lin
- Tessa Swanson
- Tetra Tech
- Texaco
- Texas A&M University Student Chapter
- Texas A&M University Student Chapter
- Texas A&M University Student Chapter
- Texas Children's Hospital
- Texas Tech University Student Chapter
- Texas Tech University Student Chapter
- Thais Fonseca
- Thales Teixeira
- The Babcock & Wilcox Company
- The Chessie System
- The Egyptian Cabinet
- The Finance Ministry of Kuwait
- The Hertz Corporation
- The Lancester Prize was not awarded in 2009.
- The Ohio State University Student Chapter
